<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button id="btn">
        获取电影列表
    </button >
    <ul id="ul">

    </ul>
    <script>
        let btn = document.getElementById('btn')
        let ul = document.getElementById('ul')
        btn.addEventListener('click',()=>{
           //朝后端发一个请求，获取到需要的数据
           let xhr = new XMLHttpRequest();//创建了一个ajax实例
           xhr.open('GET','https://mock.mengxuegu.com/mock/65a91543c4cd67421b34c898/movie/movieList',true)
           xhr.send()
           xhr.onreadystatechange = () =>{  //检测请求的每个阶段
            if(xhr.readyState == 4 && xhr.status == 200){
                console.log(JSON.parse(xhr.responseText));
                const movieList = JSON.parse(xhr.responseText).movieList
                for(let i =0;i<movieList.length;i++){
                    const li = document.createElement('li')
                    li.innerHTML =`${movieList[i].nm} -- ${movieList[i].star}` //movieList.movieList[i].nm + "---" + movieList.movieList[i].star
                    ul.appendChild(li)
                }
            }
           }
        })
    </script>
</body>
</html>